package com.hss01248.facedetect.utils;

import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.util.Base64;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;

import Decoder.BASE64Decoder;
import Decoder.BASE64Encoder;

public class Base64Utils {


    /**
     * 图片转base64字符串
     *
     * @param imgFile 图片路径
     * @return
     */
    public static String imageToBase64Str(String imgFile) {
        InputStream inputStream = null;
        byte[] data = null;
        try {
            inputStream = new FileInputStream(imgFile);
            data = new byte[inputStream.available()];
            inputStream.read(data);
            inputStream.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
        // 加密
        BASE64Encoder encoder = new BASE64Encoder();
        return encoder.encode(data);
    }


    /**
     * base64编码字符串转换为图片
     *
     * @param imgStr base64编码字符串
     * @param path   图片路径
     * @return
     */
    public static boolean base64StrToImage(String imgStr, String path) {
        if (imgStr == null)
            return false;
        BASE64Decoder decoder = new BASE64Decoder();
        try {
            // 解密
            byte[] b = decoder.decodeBuffer(imgStr);
            // 处理数据
            for (int i = 0; i < b.length; ++i) {
                if (b[i] < 0) {
                    b[i] += 256;
                }
            }
            //文件夹不存在则自动创建
            File tempFile = new File(path);
            if (!tempFile.getParentFile().exists()) {
                tempFile.getParentFile().mkdirs();
            }
            OutputStream out = new FileOutputStream(tempFile);
            out.write(b);
            out.flush();
            out.close();
            return true;
        } catch (Exception e) {
            return false;
        }
    }

    //base64转为bitmap
    public static Bitmap base64ToBitmap(String base64Data) {
//        byte[] bytes = Base64.decode(base64Data, Base64.DEFAULT);
//        return BitmapFactory.decodeByteArray(bytes, 0, bytes.length);

        byte[] byteIcon = Base64.decode(base64Data, Base64.DEFAULT);
        //调整异常数据
        for (int i = 0; i < byteIcon.length; ++i) {
            if (byteIcon[i] < 0) {
                byteIcon[i] += 256;
            }
        }
        return BitmapFactory.decodeByteArray(byteIcon, 0, byteIcon.length);
    }


}
